This 2012 presentation from the Network Tradecraft Advancement Team (NTAT), a joint Five Eyes surveillance unit, discusses options for installing malware on smartphones in light of the challenge posed by the Arab Spring: see the CBC News article Spy agencies target mobile phones, app stores to implant spyware, 21 May 2015.

This slide from a March 2013 NSA Special Source Operations presentation reveals the existence of a FISA Court order (case number 13-319) relating to “Germany”, among others: see the Der Spiegel article ‘A’ for Angela: GCHQ and NSA Targeted Private German Companies and Merkel, 29 March 2014.

This document lists the 193 governments, intragovernmental organisations and other entities which the NSA was granted the legal authority to intercept communications “about” for foreign intelligence purposes in August 2010: see the Washington Post article Court gave NSA broad leeway in surveillance, 30 June 2014.

This internal NSA post from September 2006 describes the evolution of the European Security Operations Center and the focus of the US-German collaboration in signals intelligence: see the Der Spiegel article Terrorverdächtige: NSA nutzte Erkenntnisse aus Deutschland-Filiale für Tötungen, 15 June 2014.

﻿(U//FOUOKTh^European. Security Center to Become the 'ESOC'
FROM:
A&P‘s Director, Enterprise Management (S2)
Run Date: 09/11/2006
(S//SI) NSA to help build up capabilities of the intell...